Siemens 3RU21364JB0 Thermal Overload Relay
Compare: SIRIUS 3RU2 Family (S2 Frame, Class 10, Screw/Spring Terminal)
The reader must qualify all listed alternates independently against the specific application requirements. No similarity score implies preference or interchangeability.
| Spec | 3RU21364JB0 (seed) | 3RU21364EB0 | 3RU21364FB0 | 3RU21364GB0 | 3RU21364HB0 | Similarity |
|---|---|---|---|---|---|---|
| Current Range | 54–65 A | 22–32 A | 28–40 A | 36–45 A | 40–50 A | — |
| Terminal | Screw | Screw | Screw | Screw | Screw | — |
| Encapsulation | Bulk | Bulk | Bulk | Bulk | Bulk | — |
| Series | SIRIUS 3RU2 | SIRIUS 3RU2 | SIRIUS 3RU2 | SIRIUS 3RU2 | SIRIUS 3RU2 | — |
| Accessory Type | Thermal Overload Relay | Thermal Overload Relay | Thermal Overload Relay | Thermal Overload Relay | Thermal Overload Relay | — |
| For Use With | Contactors | Contactors | Contactors | Contactors | Contactors | — |
| ROHS | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | — |
| Product Status | Active | Active | Active | Active | Active | — |
Why similar to 3RU21364EB0 / FB0 / GB0 / HB0: All share the 3RU2136 base product number, SIRIUS 3RU2 series, Class 10 thermal bimetal design, bulk encapsulation, and screw-terminal termination. They differ solely in the current-setting range.
| Spec | 3RU21364JD0 | 3RU21364AB0 | 3RU21364KB0 | 3RU21364BB0 | Similarity |
|---|---|---|---|---|---|
| Current Range | 54–65 A | 11–16 A | 62–73 A | 14–20 A | — |
| Terminal | Spring | Screw | Screw | Screw | — |
| Encapsulation | Box | Box | Box | Box | — |
| Series | SIRIUS | SIRIUS | SIRIUS | SIRIUS | — |
| Accessory Type | Thermal Overload Relay | Thermal Overload Relay | Thermal Overload Relay | Thermal Overload Relay | — |
| For Use With | Contactors | Contactors | Contactors | Contactors | — |
| ROHS | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | — |
| Product Status | Active | Active | Active | Active | — |
Why similar to 3RU21364JD0: Matches the 54–65 A range and 3RU2136 base; same thermal overload relay type and contactor compatibility. Diverges in termination (spring vs. screw) and encapsulation (box vs. bulk).
Why similar to 3RU21364AB0 / KB0 / BB0: Share the 3RU2136 base, SIRIUS thermal overload design, and contactor-mounting compatibility. These are lower-range Class 10 variants with screw terminals; they differ in current-setting window.
Application Notes: 3RU21364JB0 / SIRIUS 3RU2
- The MPN suffix JB denotes a 54–65 A setting range within the 3RU2136 family (S2 frame size).
- Class 10 tripping characteristic suits typical motor starting conditions with acceleration times up to approximately 10 seconds.
- Ambient-temperature-compensated bimetal element reduces nuisance trips from surrounding heat sources.
- Designed for direct mounting to SIRIUS 3RT2 contactors; verify mechanical and electrical compatibility against the contactor's rated current and terminal configuration.
- Screw-type terminals accept conductors per IEC; tighten to manufacturer-specified torque values during installation.